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參數(shù)資料
| 型號： | AD7827 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 3 V/5 V, 1 MSPS, 8-Bit, Serial Interface Sampling ADC |
| 中文描述： | 3伏/ 5伏，1 MSPS的，8位，串行接口采樣ADC |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 185K |
| 代理商： | AD7827 |
AD7827
–10–
REV. 0
AD7827 SE RIAL INT E RFACE
In order to achieve a high throughput rate, the serial port of the
AD7827 has been optimized for high speed serial protocols.
Many high speed serial protocols use a continuous serial clock
to transfer data, e.g., the serial ports of many popular DSPs like
the T MS320C5x, ADSP-21xx and DSP560xx. T he serial inter-
face of the AD7827 is optimized for communication with such
devices.
T he serial interface of the AD7827 uses a three-wire interface to
communicate with a Master. T he serial clock pin (SCLK ) is a
logic input and determines the bit transfer rate. T he Receive
Frame Synchronization pin (RFS) is a logic output and used to
synchronize the data with a continuous serial clock. T he data
output pin (D
OUT
) is a logic output and serial data is shifted
out onto this pin on the rising edge of the serial clock. T he first
rising edge of the serial clock after the end of a conversion causes
the RFS pin to go logic low. (See Figure 15 below.) T he D
OUT
pin
leaves its high impedance state and the first MSB is shifted out
on the first SCLK rising edge after the end of conversion. T he
remaining seven data bits are shifted out on subsequent SCLK
rising edges. T he D
OUT
pin enters its high impedance state again
on the falling edge of the eighth SCLK after RFS goes low. T he
RFS output goes high again on the rising edge of the ninth SCLK .
If the AD7827 does not receive a ninth SCLK , the RFS will be
reset logic high by the next falling edge of
CONVST
.
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
RFS
SCLK
D
OUT
CONVST
t
1
t
2
t
3
t
7
t
8
t
4
t
10
1
2
3
4
5
6
7
8
t
9
t
5
t
11
t
6
Figure 15. Serial Timing
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PDF描述 |
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| AD7827BN | 14-Bit 48KSPS DAS with ADC, MUX, PGA and Internal Reference 28-SSOP -40 to 85 |
| AD7827BR | 3 V/5 V, 1 MSPS, 8-Bit, Serial Interface Sampling ADC |
| AD7828UE | LC2MOS High Speed 4- & 8-Channel 8-Bit ADCs |
| AD7828CQ | LC2MOS High Speed 4- & 8-Channel 8-Bit ADCs |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7827BN | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin PDIP 制造商:Rochester Electronics LLC 功能描述:8-BIT SERIAL 2MSPS ADC - Bulk 制造商:Analog Devices 功能描述:IC 8BIT ADC 7827 DIP8 |
| AD7827BNZ | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin PDIP 制造商:Analog Devices 功能描述:IC 8BIT ADC 7827 DIP8 |
| AD7827BR | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin SOIC N 制造商:Rochester Electronics LLC 功能描述:8-BIT SERIAL 2MSPS ADC - Bulk |
| AD7827BR-REEL | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:8-BIT SERIAL 2MSPS ADC - Tape and Reel |
| AD7827BR-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:8-BIT SERIAL 2MSPS ADC - Tape and Reel |
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